(sorry, bad english)
With Avidemux I cut out a small clip from a big video file.
Then I save the clip.
MKV with x264: height=1280 width=536 Bitrate=2000
Avidemux:
Mpeg4 AVC (x264)
Average Bitrate (Two Pass) = 1500
No video filter.
-> Result: video size = 50 MB (Mediainfo shows: 1280x536 and Bitrate 1500)
Avidemux:
Mpeg4 AVC (x264)
Average Bitrate (Two Pass) = 1500
Filter swsResize: height=640 width=272
-> Result: video size = 50 MB (Mediainfo shows: 640x272 and Bitrate 1500)
Why is this the same size? I don't understand this.
Please, can anyone help me?
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Last edited by Tedbax; 12th Mar 2016 at 01:22.
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assuming you mean "file size" ?
because you used the same bit rate ?
1500 is NOT a large bit rate it is a small/low bit rate
the overall quality of the video frames is going to be better/higher with the small frame vrs the large frame
in other words your bit rate is too low for the original size clip cut/edit
your size is the same for each video clip, because you are using the bare minamum bit rate, it really can;t compress any smaller
just my opinion, maybe i am wrong -
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As said, frame size does NOT affect file size.
File size = run length * Bit Rate.
So if Bit Rate stays the same then so does the file size. -
As mentioned, downsizing the res does not affect the file size. However, downsizing should give you better quality at the same bit rate.
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